J and MD Milligan P/L v Queensland Building Services Authority

The case involves J and MD Milligan P/L, who operate a business fabricating and installing steel structures, against the Queensland Building Services Authority. The dispute pertains to the plaintiff's request for leave to amend their claim to include a new cause of action based on estoppel. The Queensland Building Services Authority, the defendant, is the licensing authority responsible for the plaintiff's trade. The dispute arose when the defendant sent the plaintiff a licence renewal notice, subsequently suspending the licence under section 53A of the Queensland Building Services Authority Act 1991 due to the plaintiff's failure to provide information about its continued satisfaction of relevant financial requirements. After the information was eventually provided, the suspension ended. The plaintiff sought a declaration that the defendant is estopped from denying that the information provided met the requirements of section 53A.

The court was required to decide whether the plaintiff should be granted leave to amend its claim to include the new cause of action in estoppel and if the plaintiff had pleaded the necessary elements for estoppel. Additionally, the court had to determine whether estoppel could prevent the exercise of a statutory duty or discretion and whether the defendant's application to strike out parts of the plaintiff's statement of claim should succeed. The court also needed to decide if summary judgment should be entered in favor of the defendant.

The court found that the plaintiff's application for leave to amend its claim was refused. Regarding the defendant's application, the court struck out certain paragraphs of the plaintiff's statement of claim but denied the request for summary judgment. The court determined that the plaintiff had not sufficiently pleaded the elements necessary for estoppel and that estoppel could not be used to prevent the exercise of a statutory duty or discretion. Therefore, the court refused to grant summary judgment in favor of the defendant.